When to Use JSPs
When should you use JSP pages? JSP pages should be used when interactive Web-based content is desired over static content; that is, when content is predicated on user response rather than pre-scripted static text. This dynamic Web-based model is usually accomplished by implementing an n-tier architecture, such as Model-View-Controller, where presentation, application/business logic, and data archiving are layered. Within this layered approach, JSPs should be implemented as the presentation. The JSPs should implement minimal Java code, while providing only a client portal into the application. User requests are serviced by the Controller layer using servlets or other Java objects (such as JavaBeans, Session EJBs, tag libraries, ...
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